Uchishandisa dhizaini yemagetsi emagetsi yeflue gas desulfurization (FGD) system semuenzaniso, ongororo iyi inoongorora nyaya dziri mumasisitimu emvura etsvina eFGD, senge dhizaini isina kunaka uye mitengo yakakwira yekutadza kwemidziyo. Kuburikidza nekuwandisa optimization uye tekinoroji shanduko, iyo yakasimba yemukati mumvura yetsvina yakaderedzwa, kuve nechokwadi chenguva dzose hurongwa hwekushanda uye kudzikisa mari yekushandisa nekugadzirisa. Mhinduro dzinoshanda uye kurudziro zvakarongwa, zvichipa hwaro hwakasimba hwekuzadzisa zero tsvina yemvura mune ramangwana.
1. System Overview
Zvidyarwa zvemagetsi emarasha zvinowanzo shandisa limestone-gypsum wet FGD process, inoshandisa limestone (CaCO₃) seinomwisa. Iyi nzira inoburitsa FGD tsvina yemvura. Muchiitiko ichi, maviri akanyorova FGD masisitimu anogovera imwe yetsvina yekurapa unit. Nzvimbo yemvura yetsvina ndiyo gypsum cyclone inofashukira, inogadziriswa pachishandiswa nzira dzechinyakare (triple-tank system) ine hunyanzvi hwakagadzirwa hwe22.8 t/h. Mvura yetsvina yakacheneswa inopombwa makiromita matanhatu kuenda kunzvimbo yekurasa kuitira kudzvanyirira huruva.
2. Matambudziko Makuru muSistimu Yekutanga
Iyo diaphragm yemapombi edosing kazhinji inodonha kana kutadza, kudzivirira kuenderera kwemakemikari dosing. Huwandu hwekutadza kukwira muplate-uye-frame filter presses uye pombi dzetsvina dzakawedzera zvinodiwa nevashandi uye kukanganisa kubviswa kwedhaka, kunonotsa sedimentation mune zvinojekesa.
Mvura yetsvina, yakabva kugypsum cyclone yakafashukira, yakanga ine density inosvika 1,040 kg/m³ ine yakasimba ye3.7%. Izvi zvakakanganisa kugona kweiyo system kuramba ichiburitsa mvura yakabikwa uye kutonga inokuvadza ion concentrations muabsorber.
3. Preliminary Modifications
Kuvandudza Chemical Dosing:
Mamwe matangi emakemikari akaiswa pamusoro pekatatu-tank system kuti ive nechokwadi chekuenderana kudonhedzwa kuburikidza negiravhiti, inodzorwa neonline concentration mita.
Mhedzisiro: Kuvandudzwa kwemhando yemvura, kunyangwe sedimentation yaive ichiri kudikanwa. Kubuda kwezuva nezuva kwakaderedzwa kusvika pa200 m³, iyo yakanga isina kukwana kushanda kwakadzikama kweaviri maFGD masisitimu. Dosing mitengo yaive yakakwira, avhareji 12 CNY/ton.
Kushandisazve Mvura Yakasviba Kudzvanya Dust:
Mapombi akaiswa pazasi peanojekesa kuti aendese chikamu chemvura yetsvina kunzvimbo dzemadota ekusanganisa nekunyorovesa.
Mhedzisiro: Kudzikira kudzvanywa panzvimbo yekurasa asi zvichiramba zvichikonzera huturu hwepamusoro uye kusateedzera zviyero zvekubuda.
4. Iyezvino Optimization Matanho
Nekuomesesa mirau yezvakatipoteredza, imwezve system optimization yaive yakakosha.
4.1 Kugadziriswa Kwemakemikari uye Kuenderera Kushanda
Yakachengetwa pH pakati pe9-10 kuburikidza nekuwedzera makemikari dosing:
Kushandiswa kwezuva nezuva: lime (45 kg), coagulants (75 kg), uye flocculants.
Iva nechokwadi chekubuda kwe240 m³ / zuva remvura yakachena mushure mekushanda kwehurongwa hwepakati.
4.2 Kudzorerazve Emergency Slurry Tangi
Kaviri-kushandiswa kwetangi re emergency:
Munguva yekuzorora: Slurry kuchengetedza.
Panguva yekushanda: Natural sedimentation yekubvisa mvura yakachena.
Optimization:
Akawedzera mavharuvhu uye pombi pamatangi akasiyana siyana kuti agone kuchinjika mashandiro.
Sedimented gypsum yakadzoserwa kune system yekubvisa mvura kana kushandiswa zvakare.
4.3 Magadzirirwo eSystem-yakafara
Kudzikisira kuomarara mumvura yetsvina iri kuuya kuburikidza nekudzorerazve filtrate kubva pavacuum belt dewatering systems kuenda kutsvina buffer tank.
Kuwedzera kuita sedimentation nekupfupisa nguva dzechisikigo dzekugadzirisa kuburikidza nemakemikari dosing mumatangi ekukurumidzira.
5. Benefits of Optimization
Kugona Kuvandudzwa:
Kuenderera mberi nekushanda nekubuda kwezuva nezuva kweanopfuura 400 m³ emvura inoraswa inowirirana.
Inoshanda ion concentration yekudzora mune absorber.
Mashandiro Akareruka:
Yakabvisa kudiwa kweplate-and-frame filter press.
Basa rakaderedzwa rekubata matope.
Kuvimbika KweSistimu Yakawedzerwa:
Kukuru kuchinjika mumagadzirirwo emvura yetsvina.
Kuvimbika kwemidziyo yepamusoro.
Kuchengeta Mari:
Kemikari kushandiswa kwakaderedzwa kuita lime (1.4 kg/t), coagulants (0.1 kg/t), uye flocculants (0.23 kg/t).
Mutengo wekurapa wakadzikiswa kusvika pa5.4 CNY/ton.
Kuchengetwa kwepagore kweanosvika 948,000 CNY mumitengo yemakemikari.
Mhedziso
Kukwenenzverwa kweFGD tsvina yemvura system kwakaguma nekuvandudzika kwakanyanya, kuderedzwa kwemitengo, uye kutevedzera kuomarara kwemamiriro ekunze. Matanho aya anoshanda sereferensi kune mamwe masisitimu ari kutsvaga kuwana zero tsvina yekurasa uye kuenderera kwenguva refu.
Nguva yekutumira: Jan-21-2025
